With a carry on? IF you can do that run in under 5:00 you should sign up for the olympics (the under walkway alone has to be a 1/4 mile). Plus dodging people at the security for B and the esclators?
Good point. I meant more like 6 minutes
I know it's possible, when I first started flying through ORD in weather I had 20min to get from C to F and I waited for the shuttle. A friend ran it and he was well in his seat by the time I got to the gate and the GA quickly notified the plane there was one last person to get on. I was sweating more than him too
I just think that flyertalk gives off the impression that ORD C->F is not a reasonable walk when it's 20 min to boarding time, while it totally is.
Next time, I'll count the number of steps and report back